The following typographical conventions are used in this book:
- Bold
Indicates new terms.
- Italic
Used within paragraphs to refer to linguistic examples, the names of texts, and URLs; also used for filenames and file extensions.
Constant width
Used for program listings, as well as within paragraphs to refer to program elements such as variable or function names, statements, and keywords; also used for program names.
Constant width italic
Shows text that should be replaced with user-supplied values or by values determined by context; also used for metavariables within program code examples.
Tip
This icon signifies a tip, suggestion, or general note.
Caution
This icon indicates a warning or caution.
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